38 1 Dr. A, Giinther's Synopsis of the Labroid Genera. 



labrus, sp., Bleck.). Four canine teeth anteriorly in each 

 jaw ; scales on the cheek very small ; operculum scaly. (H. 

 macrodon, Lacep. ; H. ommopterus, Richards. ; H. (Labrus) ja- 

 ponicus, Cuv. & Val., &c.) 



Third Group : Julidina. 



Dorsal fin with less than thirteen spines; anterior teeth free, 

 conical, compressed in Anampses only, the lateral sometimes more 

 or less confluent into a ridge; teeth of the lower pharyngeal not 

 confluent, or pavement-like. 



Seas of the tropics, single species extending into the tempe- 

 rate regions. 



* Eleven or twelve (ten) dorsal spines ; lateral line not interrupted ; 



cheeks and opercles scaly. 



9. Xipiiochilus, Bleck. The membrane of the soft dorsal 

 without scales; both limbs of the prseoperculum scalelessj 

 four canine teeth anteriorly in each jaw; lateral teeth more 

 or less confluent into an obtuse osseous ridge; a posterior 

 canine tooth. (X. typus, Bleek.) 



10. Semicossyphus (Cossyphus, sp., Cuv. & Val., Bleek.). The 

 membrane of the soft dorsal without scales; both limbs of the 

 prseoperculum scaleless ; four canine teeth anteriorly in each 

 jaw ; lateral teeth more or less confluent into an obtuse osseous 

 ridge ; no posterior canine tooth. (S. reticulatus, Cuv. & Val. ; 

 S. (Labrus) pulcher, Ayres.) 



11. Decodon (Cossyphus, sp., Poey). The mcmbrane.of the soft 

 dorsal without scales ; the scales on the cheeks extend over the 

 lower prseopercular limb, the posterior being naked and ser- 

 rated ; four canine teeth anteriorly in each jaw ; lateral teeth 

 not confluent; a posterior canine tooth. (D. puellaris, Poey.) 



12. Pteragogus, Peters*. Base of the dorsal fin scaly; the 

 posterior limb of the prceoperculum serrated; scales large 

 (L. lat. 25). D. |ffj. A. £. (P. operations, Pet. ; P. tceniops, 

 Pet.) 



13. Cossyphus (Cossyphus, sp., Cuv. & Val.). The membrane 

 of the soft dorsal is scaly at the base ; scales of moderate size 

 (1. lat. 30-36). Teeth in the jaws well developed; a poste- 

 rior canine tooth. D. j. A. ^. (C. mesothorax, Bl. ; C. 

 axillaris, Benn. ; C. macrurus, Lacep.; C. (Crenilabrus) an- 



* Not having had an opportunity of examining the species of this genus, 

 we do not feel quite confident that the base of the dorsal tin is really scaly. 

 If the scales at the base of the fin are merely the enlarged scales of the 

 uppermost series of the back, without adhering to the membrane of the fin, 

 this genus and the preceding should, perhaps, be united. 



